space <= 0 check avoids unsigned comparison botch

SCCS-vsn: sys/kern/uipc_socket.c 4.30

diff --git a/usr/src/sys/kern/uipc_socket.c b/usr/src/sys/kern/uipc_socket.c
index 0da3549..ba8fec9 100644 (file)
--- a/usr/src/sys/kern/uipc_socket.c
+++ b/usr/src/sys/kern/uipc_socket.c
@@ -1,4 +1,4 @@
-/*     uipc_socket.c   4.29    82/01/19        */
+/*     uipc_socket.c   4.30    82/01/24        */

 
 #include "../h/param.h"
 #include "../h/systm.h"
 
 #include "../h/param.h"
 #include "../h/systm.h"


@@ -303,7 +303,7 @@ again:
                goto release;
        }
        space = sbspace(&so->so_snd);
                goto release;
        }
        space = sbspace(&so->so_snd);

-       if (space == 0 || sosendallatonce(so) && space < u.u_count) {
+       if (space <= 0 || sosendallatonce(so) && space < u.u_count) {

                if (so->so_options & SO_NONBLOCKING)
                        snderr(EWOULDBLOCK);
                sbunlock(&so->so_snd);
                if (so->so_options & SO_NONBLOCKING)
                        snderr(EWOULDBLOCK);
                sbunlock(&so->so_snd);